Trolleybus

A road transit mode powered by electricity drawn continuously from a pair of overhead wires through spring-loaded trolley poles, rather than carried aboard as diesel fuel or, in most cases, a large onboard battery. Werner von Siemens demonstrated the first such vehicle, the Elektromote, in Berlin in 1882, and trolleybus networks later spread through many European, Asian and North American cities as a quieter, zero-tailpipe-emission alternative to the diesel bus. Modern trolleybuses increasingly carry batteries as well, letting them run for a distance off-wire and adding route flexibility the original fixed-wire systems lacked. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/